CN200966643Y

CN200966643Y - Device for taking out nail for connecting bones

Info

Publication number: CN200966643Y
Application number: CN 200620011362
Authority: CN
Inventors: 刘建锋; 李艳菊; 刘永昌; 唐延军; 亓俊萍
Original assignee: 刘建锋
Priority date: 2006-10-27
Filing date: 2006-10-27
Publication date: 2007-10-31
Anticipated expiration: 2016-10-27

Abstract

This is a bone-knitting pin extractor, pertaining to the medical appliance. The bone-knitting pin extractor is composed of a screwdriver, a radar tube and a sleeve. The toolbar of the screwdriver is equipped inside the radar tube, while the handle is exposed at the upper part of the radar tube. The circular spacing board is arranged on the outer wall of the toolbar which is outside the lower end of the radar tube. The outer wall of the radar tube's lower end is equipped with the external thread, while the internal thread is available at the inner wall of the sleeve. The thread of the sleeve is connected at the lower part of the radar tube. The lower end of the sleeve is also arranged with a side port which is linked with the through hole of the sleeve's bottom. The jointed cavity is big at the upper side and small at the nether side, so as to be in mesh with the nail head of the bone-knitting nail. The said through hole's diameter is more than that of the bone-knitting nail bar, but is less than that of the nail head thereof. This utility model boasts the simple structure, the usablness and the high success rate of nail drawing, so as to greatly reduce the broken nail and relieve the patient's sufferings.

Description

The synthetism nail extractor

Technical field

This utility model belongs to technical field of medical instruments.

Background technology

Synthetism steel plate, synthetism nail internal fixation are the main means of treatment fracture, treat to take out internal fixation after the union of fracture.The taking-up of the nail of synthetism at present mainly is to take out with screwdriver, power when screwing out the synthetism nail with screwdriver and screwdriver withstand on the power that synthetism nails on and are directly proportional, therefore effort relatively just when meeting the synthetism nail that difficulty gets, the people that strength is little often is difficult to reach, skid so repeatedly, wear and tear, the edge of a knife that synthetism is followed closely shoals, broadening, more is difficult to the synthetism nail is taken out.What also have utilizes the groove that rotates and upgrades between screwdriver knife bar and sleeve, and screwdriver and the synthetism nail edge of a knife is held out against, and has saved manpower, but can only do the brute force rotation of a direction, easily the rotation of synthetism nail is fractureed, and more difficult taking-up has increased patient's misery.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of simple in structure, easy to use, gets the high synthetism nail extractor of nail success rate.

The purpose of this utility model is achieved in that this synthetism nail extractor is made up of screwdriver, positioning pipe, sleeve, and the knife bar of screwdriver is sleeved in the positioning pipe, and handle is exposed at the upper end of positioning pipe, and the knife bar outer wall outside the positioning pipe lower end is provided with circular limiting plate; Be provided with external screw thread on the outer wall of positioning pipe lower end, sleeve lining is provided with female thread, and bush whorl is connected the positioning pipe bottom; The sleeve lower end has a side opening to communicate with sleeve bottom through hole, and cavity shape up big and down small ailhead with synthetism nail in the place's of communicating matches, and sleeve bottom through-hole diameter is greater than the diameter of the synthetism ailing bar diameter less than synthetism ailing head.

Advantage of the present utility model: simple and reasonable, easy to use, the sleeve side opening is aimed at the synthetism nail, through hole places the bottom of synthetism ailing head, on move synthetism ailing head rest risen, screw positioning pipe again, the edge of a knife that screwdriver and synthetism are nailed on is aimed at and is held out against, this moment the rotary screw cutter, synthetism nail screw type is screwed out, and progressive reciprocal rotation like this can make the synthetism nail loosening, last taking-up smoothly, effectively reduce broken nail, thereby alleviate patient's misery.

Description of drawings

Accompanying drawing 1 is a front view of the present utility model.

Accompanying drawing 2 is a longitudinal sectional view of the present utility model.

Accompanying drawing 3 is an A----A cutaway view Amplified image of the present utility model in the accompanying drawing 1.

The specific embodiment

Be described in further detail below in conjunction with accompanying drawing 1, accompanying

drawing

2,3 pairs of this utility model of accompanying drawing: this synthetism nail extractor is made up of screwdriver 1, positioning pipe 2, sleeve 3, the knife bar of screwdriver 1 is sleeved in the positioning pipe 2, handle is exposed at the upper end of positioning pipe 2, and the knife bar outer wall of outside, positioning pipe 2 lower ends is provided with circular limiting plate 4; Be provided with external screw thread on positioning pipe 2 lower end outer walls, sleeve 3 inwalls are provided with female thread, and sleeve 3 is threaded in positioning pipe 2 bottoms; Sleeve 3 lower ends have a side opening 5 to communicate with sleeve 3 bottom through holes, and cavity shape up big and down small ailhead with synthetism nail in the place's of communicating matches, and sleeve 3 bottom through-hole diameters are greater than the diameter of the synthetism ailing bar diameter less than synthetism ailing head.

Claims

1, a kind of synthetism nail extractor, form by screwdriver (1), positioning pipe (2), sleeve (3), the knife bar that it is characterized in that screwdriver (1) is sleeved in the positioning pipe (2), and handle is exposed at the upper end of positioning pipe (2), and the knife bar outer wall of outside, positioning pipe (2) lower end is provided with circular limiting plate (4); Be provided with external screw thread on the outer wall of positioning pipe (2) lower end, sleeve (3) inwall is provided with female thread, and sleeve (3) is threaded in positioning pipe (2) bottom; Sleeve (3) lower end has a side opening (5) to communicate with sleeve (3) bottom through hole, and cavity shape up big and down small ailhead with synthetism nail in the place's of communicating matches, and sleeve (3) bottom through-hole diameter is greater than the diameter of the synthetism ailing bar diameter less than synthetism ailing head.